ONLINE ASSESSMENT OF VENTRICULAR-FUNCTION BY AUTOMATIC BOUNDARY DETECTION AND ULTRASONIC BACKSCATTER IMAGING
ONLINE ASSESSMENT OF VENTRICULAR-FUNCTION BY AUTOMATIC BOUNDARY DETECTION AND ULTRASONIC BACKSCATTER IMAGING
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DOI：
10.1016/0735-1097(92)90484-5
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发表时间：
1992-02-01
影响因子：
24
通讯作者：
SOBEL, BE
中科院分区：
文献类型：
--
作者：
PEREZ, JE;WAGGONER, AD;SOBEL, BE
为了提供一种适合在线分析心室功能的方法，改进了传统的二维超声成像系统，根据其定量声学特性实时检测和跟踪血液组织界面。这种修改允许在线显示左心室腔面积、分数面积变化、容积和射血分数。从54例患者和12例正常受试者获得了宽范围的心室尺寸和收缩功能图像。将在线测量的空腔面积与离线测量的空腔面积进行比较（分析录制的常规图像）。从短轴视图在线测量的左心室腔区域与脱机视图密切相关，从根尖视图测量的区域也是如此。在线分数面积变化与离线计算的抽射分数具有良好的相关性。超过70%的患者可以通过开发的方法进行充分的研究。因此，基于组织声学特性定量评估的自动边界检测允许在线定量室腔面积和功能指标。
To provide an approach suitable for on-line analysis of ventricular function, a conventional two-dimensional ultrasound imaging system was modified to detect and track blood-tissue interfaces in real time based on their quantitative acoustic properties. This modification permitted on-line display of the left ventricular cavity area, fractional area change, volumes and ejection fraction on a beat by beat basis.Images were obtained from 54 patients and 12 normal subjects with broad ranges of ventricular dimensions and systolic function. On-line measurements of cavity areas were compared with off-line measurements of cavity areas (analysis of videotaped conventional images). Left ventricular cavity areas measured on-line from short-axis views correlated closely with off-line views as did areas from apical views. On-line fractional area change correlated well with ejection fraction calculated off-line.More than 70% of patients could be studied adequately with the approach developed. Thus, automatic boundary detection based on quantitative assessment of tissue acoustic properties permits on-line quantitation of ventricular cavity areas and indexes of function.